As a general guide, radiograph may be needed for periodontal assessment for BPE codes 3, 4, *
To assess the degree of bone loss eg. ⅓, ½, ⅔ of the root length or percentage.
To assess pattern of bone loss eg. vertical bone loss or horizontal bone loss.
To identify any subgingival calculus and defective restoration.
To assess the root length, root resorption and morphology of root and remaining bone support of periodontally involved teeth.
To detect furcation involvement of molar teeth.
For a general view of periodontal ligament space and periapical region.
For screening for orthodontics treatment and assess problems in teeth alignment (lateral ceph)